Detachable link.



J. DUPOUR.

DETAGHABLE LINK.

APPLICATION FILED MAY 20, 190B.

943,2QQ Patented Dec. 14, 1909.

WITNESSES ments in detachable links or the like, and is full, clear, andexact Uhllldl) STATES JOHN DUFOUR, OF THE DALLES. OREGON.

nE'rAo'HA'BLn LINK.

sas es.

To all whom "it may concern:

Be it known that I, JOHN Durona, a citizen of the United States,residing at The Dalles, in the county of Wasco and State of regon, haveinvented certain new and useful Improvements inDetachable Links; and Ido hereby declare the following to be a description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to certain improvenitended as a self-grippingdevice or snap hook to be used on chains, harness tugs, bridle reins,lifting cranes, and blocks and tackle, although it is susceptible of avariety of other applications in devices where there desired a safe,strong, and absolute gripping connection, and at the same time an easymethod of releasing.

[in object of my invention is to provide a device of the cha'acter justmentioned, which possesses the greatest resisting strength possible, theparts being so related that the strain of the load is distributedequally throughout. A turther object is the provision of a grippingdevice the parts of which are adapted to be held automatically in normalor holding position, and which grip instantly when any weight them.

Other objects and advantages'will appear from the description as setforth in the specification hereinafter, and pointed out in the claims.

in the drawings hereto appended Figure 1 is a side elevation of thedevice in closed position. Fig. 2 is a top plan view of the device inopen position. Fig. 3 is a top plan View of the device in Figs. 4 and 5are detail views of the gripping jaws,

Referring more particularly to the several views, in which likecharacters of reference refer to corresponding parts in the differentfigures, A, A designate the gripping jaws, which are pivotallyconnected, as shown by or pull coines upon lugs u, {L1, on the jaw A.These lugs eniparts being sebrace an ear 6 on jaw A, the

ured together by a suitable pin 0. The

jaw A has an angular rear arm or lever (Z winch is provided with a slote. The jaw A is formed at 1ts rear end into a neck f, the angle, ofwhich corresponds to that of arm closed position.

Specification of Letters Patent. Application filed May 20, 1908.

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l f i l I l i l a l I l I l l I "U e n: re JL hi in A -L kjdllxiePatented tier. it,

HEM Serial No. 433,900.

The neck 7' is arranged for movement in slot 0, and is provided with anenlarged head g. A spring it is suitably secured to one of the jaws, itsfree end abutting the other jaw, andcll'ecting, normally, a closing ofthe Ridgcsor teeth '2' are cut into the jaws to enable the device to beemployed for the purpose of gripping a circular pipe or the like. Thejaw .U is provided with an abutment which is adapted to engage therecess 7;, and serve to hold the jaws firmly in locking position.

B is a ring, for connecting the device to the chain or otherinstrumentality with which itis being employed, such connection beingbad through a ring C swivcled to ring 13. It will be apparent that whenthere is a strain or load on the ring C, the jaws will be absolutelyprevented from separat ing by reason of ring R engaging and ford ing thehead g to the extreme end of slot 0, although the spring It hassutticient power under normal conditions, to force the jaws to closedposition and grip a member, even though no pull is exerted on the rim G.hen it is desired to release the jaws, it is only necessary to separatethe rear ends against the tension of spring 72, which can beaccomplished very quickly and readily.

I have disclosed the invention in a form which includes my preferredembodiment, but 'arious changes and departure may be made in the presentstructure, and still be comprehended by the spirit of the invention.

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What T desire to secure by Letters-Patent, and claim, is

1. A. device of the character described in cluding a pair of grippingjaws, rearvvardly extending arms carried thereby, one of said arms beingprovided with an opening adapted to receive the other of said arms, anda spring positioned between the arms and serving to hold said jawsnormally closed.

2. A device of the character described including a pair of grippingjaws, rearwardly extending arms carried thereby, one of said arms beingarranged to project constantly through an opening in the other arm.

3. A device of the character described ineluding a pair of grippingjaws, re'arwardly extending arms carried thereby,v one of said armsbeing constantly in engagement with a slotted portion of the other arm,and an enlarged head carried by the tirstn'icntioned arm.

4-. A device of the character described iulit) ' tending arms carried bythe jaws, one of said eluding a pair of gripping arms, lugs ear- I Intestimony whereof, I afiix my signaried by one of said jaws andembracing an ture, in the presence of two subscribing Wit- 10 ear 0n theother jaw, a spring for holding nesses. said jaws normally closed,rearwardly eX- JOHN DUFOUR.

arms being arranged to engage a slotted por- \Yilnesses: tron 1n theother arniand an enlarged head GUssm Rosnnsrnm, carried by said firstmentioned arm. 1 D. S. DUFUR.

